There are lots of uber experiences that are less than 5-star but do not rise to this level.
I had a driver in LA who was both a terrible driver and terrified of freeways. With 3 near-misses and the bad route, it took 50 min to go somewhere that would otherwise take 15, making me late for a meeting (the LA area has some communities that are physically near each other, but separated by hills/mountains that are otherwise basically impossible to get around). 1 star seems merited for someone who literally can't do the job.
I had a driver in LA who was both a terrible driver and terrified of freeways. With 3 near-misses and the bad route, it took 50 min to go somewhere that would otherwise take 15, making me late for a meeting (the LA area has some communities that are physically near each other, but separated by hills/mountains that are otherwise basically impossible to get around). 1 star seems merited for someone who literally can't do the job.